R12.2 Duplicate entries exists in FND_OAM_CONTEXT_FILES Tables in Apps Database.

The error message from the discovery process shows this is the cause of the issue as we can see in the message extracted from the log file:
Caused by: oracle.apps.fnd.oam.em.sdk.targetData.discovery.AppsDiscoveryException: Duplicate entries exists in FND_OAM_CONTEXT_FILES Tables in Apps Database.
Please clean the table before running Discovery again.
Solution
1. Backup the fnd_oam_context_files table :
sqlplus applsys/pwd
create table fnd_oam_context_files_bkp as select * from fnd_oam_context_files;
2. truncate table fnd_oam_context_files;
3. Run autoconfig in the DB tiers to populate fnd_oam_context_files table with the database information;
4. Run autoconfig in each Apps tier to populate fnd_oam_context_files with the application tier information;
5. From the EBS agent home, run:
./emctl upload
This will upload the information from the EBS system to Grid Control
6. Re-run the Discovery process.